CAT 作为服务端项目基础组件，提供了 Java, C/C++, Node.js, Python, Go 等多语言客户端，已经在美团点评的基础架构中间件框架（MVC框架，RPC框架，数据库框架，缓存框架等，消息队列，配置系统等）深度集成，为美团点评各业务线提供系统丰富的性能指标、健康状况、实时告警等。

Open-source IoT Platform - Device management, data collection, processing and visualization.

Zipkin is a distributed tracing system

A high performance caching library for Java

Apache Hadoop

QuestDB is an open source time-series database for fast ingest and SQL queries

Vert.x is a tool-kit for building reactive applications on the JVM

Apache Pulsar - distributed pub-sub messaging system

Quarkus: Supersonic Subatomic Java.

🏗 Build container images for your Java applications.

Apache Druid: a high performance real-time analytics database.

Graphs for Everyone

Apache DolphinScheduler is the modern data orchestration platform. Agile to create high performance workflow with low-code

Apache Doris is an easy-to-use, high performance and unified analytics database.

Guice (pronounced 'juice') is a lightweight dependency injection framework for Java 11 and above, brought to you by Google.

AWS Service registry for resilient mid-tier load balancing and failover.

Apache ZooKeeper

Redis Java client

The Java gRPC implementation. HTTP/2 based RPC

jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.

Generate diagrams from textual description

Java JWT: JSON Web Token for Java and Android

🔎 Open source distributed and RESTful search engine.

Resilience4j is a fault tolerance library designed for Java8 and functional programming

Feign makes writing java http clients easier

Continuous Inspection

Apache Cassandra®

Spring Security

A programmer-oriented testing framework for Java.

Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services